I made an Android app with Phonegap (Cordova 2.5.0). And I put admob in my app using this plugin. ( https://github.com/sainttex/PhoneGap-Android-Native-AdMob )
Admob
You should do this after the super.loadUrl("------");
adView = new AdView(this, AdSize.BANNER, AdMob_Ad_Unit);
LinearLayout layout = super.root;
layout.addView(adView);
AdRequest request = new AdRequest();
adView.loadAd(request);
Install cordova admob plugin.
cordova plugin add com.admob.AdmobPlugin
Then add this code.
function onDeviceReady() {
admobAd.initBanner("ca-app-pub-1738093038576474/9839543541",admobAd.AD_SIZE.BANNER.width,admobAd.AD_SIZE.BANNER.height);//ios Interstitial
admobAd.showBanner(admobAd.AD_POSITION.BOTTOM_CENTER);
}
document.addEventListener('deviceready',onDeviceReady, false);